Door-bell



(No Model.)

B. S. BLOOMPIELD, Jr.

DOOR BELL.

Patented Mar. 9, 1886.

Ila-337,658.

UNITED STATES PATENT OFFICE,

ELLIS S. BLOOMFIELD, JR, OF JERSEY CITY, NEW JERSEY.

DOOR- BELL.

SPECIPECATION forming part of Letters Patent N 0. 337,658, dated March9, 1886.

Application filed August 6, 1885.

To all whom it may concern.-

Be it known that I, ELLIs S. BLOOMFIELD, Jr.,' a citizen of the UnitedStates, and a resi-v dent of Jersey City, in the county of Hudson andState of New Jersey, have invented a new and useful Improvement inGong-Bells, of which the following is a specification.

My invention relates to that class of gongbells in which the bell-pullfor operating the bell is retained in place by the spring that opcratesthe hammer; and it consists in attaching to the base-plate, forthetripping-lever to rest against, an adjustable stop, instead of the rigidstop, as ordinarily constructed.

The object of my improvement is to give the tripping-lever more playthan is usually allowed to it, thereby keeping up the tension upon thepull-wire after it has become stretched from use.

Figure 1 is a side view of the gong and plate; Fig. 2, a front view ofthe plate and mechanlsm.

Similar letters refer to similar parts in both figures.

In Fig. 2, B is the base-plate; O, the tripping-lever, working on thefulcrum P.

L is the hammer, and G the hammer-arm, which is made of wire bent intosuitable form to make a hearing about the fulcrum k, and also a loop, K,in which one end of the spring F is secured, and an eye in which thepivott' on the. trip is retained.

H is the trip, with a pinion, 1;, secured in an eye formed on thehammer-arm for the purpose, moving freely therein, and by means of aspring coiled about the base of the pinion (an end of which is seen atn) and the shoulder r, resting against that part of the hammer-armcoiled about the fulcrum at k, is retained in position to be engaged bythe nose h of the tripping-lever, to which is attached at f theother'end of the spring F.

Serial No. 173,706. (No model.)

E is a movable stop secured to the baseplate by the pin e, so that itcan be turned back out of the way, as shown by the dotted lines.

R is a stop to prevent the tripping-leverfrom being pulled out too far.

The manner of operating is this: The hammer-arm is moved inward awayfrom the gong by the action of the tripping-lever against the trip untilit escapes, when the spring F throws it quickly back against the stop m,and the elasticity of the arm G allows the hammer to reach the gong andmake the stroke, after which, bythe further action of the spring F, thetripping-lever O is returned against the stop E. The trip H is movedback out of the way by the tripping-lever in passing, but is returned toposition by the spring at, readyfor another operation. The firstposition of the tripping-lever O and the movable stop E, as shown by theblack lines, is sufficient for the proper w rking of the bell; but afterthe pullwire has been properly adjusted to it in this position the stopE may be thrown back out of the way, as indicated by the dotted lines,and the tension of the spring F on the tripping-lever will cause it tostrain the pulling wire and always keep it taut, and the attachment onthe outside of the door or on the other end of the wire will be heldsnugly in place. I claim The combination of the tripping-lever t and thehammer-arm G, having the trip H attached thereto, the spring F, and themovable stop E, substantially as shownand described.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two witnesses, this 3d day of August, 1885.

ELLIS S. BLoOl/lFIELD, JR.

